10.3:1 6.0, 225 PRC heads, cam .695/.613 - 231/243, twin BW S366, VSRacing gen 3 44 mm wastegates & 50mm BOV, Bosch 210’s, TBSS intake, Holley smart coils, Holley Dominator, O2’s 18-22” after turbos, 3.5” dual exhaust stops about 2’ before rear differential, will be flex fuel but for initial start/tune is on ethanol free 91, BR7EF plugs, Firecore wires, Motion 92mm TB, fuel pressure at 55 psi, 10 an splits to 8an to feed each rail then out each rail into the reg & return is 6an, vacuum ran from intake to dist block feeding map & BOV, fpr has own vac line from intake, vac from cold pipe to wastegates, 2 in 1 out treadstone innercooler, on board air to wastegates, Holley dual boost controllers. I can find zero vacuum leaks, fuel leaks, injectors were brand new and have been tested twice, played musical coils with 4 spare smart coils, compression check was 200 psi - 208 psi & leak down was 4-5% with 1 cylinder just under 7%. First start both banks are fairly even & slightly rich then it settles for a few seconds and it’s all stoich, then the odd bank starts to have lean spikes, going from stoich & briefly flashing 15:1-16:1 to stoich & stays like that, under 0-9% throttle it doesn’t respond much & even stumbles a bit, at 10-11ish% throttle it’ll run somewhat smooth & rev but still has the mild lean spikes, above that it surges and goes 19-11 lean-rich on the odd bank, and much smaller movement from the even bank. Closed and open loop. I do have a remote tuner helping out when he’s available & hopefully will be remoting in this week after a month of me tending to other issues. I have baptized this engine bay in brake clean looking for a leak & nothing, no exhaust leaks to be found. I have a smoke machine being delivered this week. I’m on my 3rd set of plugs, not that the other 2 sets are junk, just running out of ideas. All plugs show combustion is happening, nothing looks scary although mostly idle time doesn’t help read a plug. I had zero luck finding a way to plug the TBSS map port so it’s threaded with a bolt and oring screwed in.

Will keep this thread running with pics and progress swapping a Gen V LT1 into a '67 Chevelle. This first post discusses the fundamentals for getting the engine into the car. On the chassis side it has stock SBC frame stands in the factory position. On the engine side I used ICT Billet 551363x Gen V LT to SBC motor mount adapters coupled with Moroso 62500 solid motor mounts in the forward most "1" holes so that the bellhousing lands in the stock location...so that my transmission crossmember and driveshaft can be re-used. There is a minor clash with the mount and the vacuum pump provision (only exists on early gen V blocks: L83, L86, LT1/4/5, won't be an issue on L84, L87, L8T later blocks) that you can either mod the mount or the block, I chose to grind on the block a bit since I won't be using the factory vacuum pump and plugged the vacuum ports with ICT Billet 551298 plugs. You'll also need a suitable swap oil pan. I chose the Holley 302-20, which clears everything by a mile! I exchanged their oil cooler blockoff with an ICT Billet 551357. Next post(s) will talk about about engine prep, trans install, and then header fitment. Check back soon..

New ls swap, this time fuel injected

Here is our old 69 Camaro street/track car. LS3 490 HP, 6 speed manual trans. DSE subframe and rear quadra link, Vintage air, Dakota dash plus more. A lot of fun. Built by Muscle Express in Jupiter Fl.

1966 Pontiac Lemans. 6.0L Gen4 swap with 80mm VSRacing turbo, Tremec TKX, 9-inch rear. Running and driving car with full interior. Working on the body finally. Lots of ICT Billet goodies on board. @thefoxypontiac on insta